1. Chapter Eight
Estimation

2. Figure 8-1: Confidence Level c and Corresponding Critical Value zc Shown on the Standard Normal Curve
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3. Figure 8-2: Area Between -z and z is 0.99
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4. Table 8-2: Some levels of Confidence and Their Corresponding Value
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5. Figure 8-3: Distribution of Sample means x
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6. Figure 8-4: 0.90 Confidence Intervals for Samples of the Same Size
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7. Figure 8-5: A Standard Normal Distribution and Student's t Distribution with d.f.=3 and d.f.=5
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8. Table 8-3: Student's t Distribution Critical Values (Excerpt from Table 6, Appendix II)
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9. Figure 8-7: Sampling Distribution of x1 – x2
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